Miri appears to resemble a vixen-like Dreamkeeper, having mostly light-gray fur with dark highlights around the upper portions of her violet colored eyes and a line straight down her nose. She has long violet wavy hair which match the color of her fox-like tail. Through concept art by David and Liz Lillie, her outfit is comprised of a blue zipper jacket with a white-cotton collar neckline over her dark-brown t-shirt, and black cargo pants. Concept art by Elson Wong shows a similar choice in clothing but she also wore small-yellow glasses.
Not much is known about Miri's personality at this time. She does appear to have a similar interest in astronomy like her partner, Hal, and was even willing to go help him look for the fallen meteorite despite the dangers that would await them.
As currently The Wayward Astronomer has yet to be published and is currently being funded the information will be limited during and after funding to avoid any major spoilers out of respect to the author.